Audit: add severity to plain and table output

[glaubinix]

Resolves: #11633

Output with plain format

composer audit --format=plain
The new audit.abandoned setting (currently defaulting to "report" will default to "fail" in Composer 2.7, make sure to set it to "report" or "ignore" explicitly by then if you do not want this.
Found 1 security vulnerability advisory affecting 1 package:
Package: api-platform/core
Severity: high
CVE: CVE-2023-25575
Title: CVE-2023-25575: Secured properties may be accessible within collections
URL: https://github.com/api-platform/core/security/advisories/GHSA-vr2x-7687-h6qv
Affected versions: >=2.6.0,<2.7.10|>=3.0.0,<3.0.12|>=3.1.0,<3.1.3
Reported at: 2023-02-28T10:37:00+00:00

Output with table format

composer audit --format=table
The new audit.abandoned setting (currently defaulting to "report" will default to "fail" in Composer 2.7, make sure to set it to "report" or "ignore" explicitly by then if you do not want this.
Found 1 security vulnerability advisory affecting 1 package:
+-------------------+----------------------------------------------------------------------------------+
| Package           | api-platform/core                                                                |
| Severity          | high                                                                             |
| CVE               | CVE-2023-25575                                                                   |
| Title             | CVE-2023-25575: Secured properties may be accessible within collections          |
| URL               | https://github.com/api-platform/core/security/advisories/GHSA-vr2x-7687-h6qv     |
| Affected versions | >=2.6.0,<2.7.10|>=3.0.0,<3.0.12|>=3.1.0,<3.1.3                                   |
| Reported at       | 2023-02-28T10:37:00+00:00                                                        |
+-------------------+----------------------------------------------------------------------------------+

Output with json format

No changes required as this just outputs the data from the Composer repository.

[Seldaek]

Thanks